69% (2024)

68% (2023)

69% (2022)

48% (2007)

69% (2018)

65% (2006)

63% (2017)

54% (2004)

60% (2009)

56% (2005)

58% (2007)

58% (2023)

57% (2005)

62% (2012)

57% (2009)

39% (2011)

33% (2005)

37% (2008)

39% (2010)

49% (2013)